Hi again Wayne, just realized my comments are not particularly helpful so instead ofgeneralities...Reading; "Summary of AVI ideas as of November 2011" the last source of support existing open communities sounds good.
Isolation is a large weakness in online learning. People simply drift away, get behind, feel ignored or have some crisis that could be noticed and fixed f2f. Someone who will respond with support within a reasonable period of time on the net might be service shared out among a community. This person need not be an expert but rather a reliable companion with the experience of the "silence of the internet.
Beyond being saved from disappearing by being noticed this mentor-like role provides a membership example of where education can lead. This was vital working with apprentices as a validation of effort noticed.